“Analysis of Sensitivity of Optical Mach Zehnder Interferometer (OMZI) Sensor Platform using Rib Waveguides”

Abstract: The proposed analysis describes an Optical Mach Zehnder Interferometer (OMZI) sensor platform using rib waveguides. OMZI is a device that makes accurate measurements of Refractive Index (RI), deals with interferometer using single mode transmission. Using the OMZI waveguide structure, optical technique for sensing and measurement was demonstrated. The entire Mach Zehnder Interferometer structure has been made using rib waveguide. Technical considerations for analysis of single mode rib waveguides and its effects on sensitivity are reported. The rib height and width for single mode rib waveguide greatly affects light guiding. Waveguide structure is designed using RSOFT CAD tool. Its optimization and measurement of refractive index has been carried out using Beam Propagation Method (BPM) technique. This is cost effective and simple methodology which can be used in guided wave bio-sensors application.

Keywords: Interferometer, Mode, Rib Waveguide.